A man wears a gas mask on his head. Photo-3348097.47722 - seattlepi.com

Image 21 of 92

A woman dances with a hula hoop.

A woman dances with a hula hoop.

Photo: Sofia Jaramillo

A woman dances with a hula hoop. Photo-3348098.47722 - seattlepi.com

Image 22 of 92

A man sits near the entrance of the event.

A man sits near the entrance of the event.

Photo: Sofia Jaramillo

A man sits near the entrance of the event. Photo-3348068.47722 - seattlepi.com

Image 23 of 92

Mariah smokes from a pipe during day two of Seattle's Hempfest pro-marijuana gathering at Myrtle Edwards Park on the Seattle waterfront on Saturday, Aug. 18, 2012. Hundreds of thousands of people are expected to attend the festival that lasts through Sunday.

Mariah smokes from a pipe during day two of Seattle's Hempfest pro-marijuana gathering at Myrtle Edwards Park on the Seattle waterfront on Saturday, Aug. 18, 2012. Hundreds of thousands of people are expected